Water-tube boiler



.D w N .N .LWN U 2 Sheets-Shen 1 Q M. A. LAWSON wER TUBE BOILER Filed Aug. L1, 1922 Dec. 8, 1925- M. A. LAWSON WATER TUBE BOILER Dec. 8 1925 2 Sheets-Sheet 2 Filed Aug. 4, 1922 gin/venia@ lan/50m Patented Dec. 8, 1925.

UNI-TED MARTIN-A. LAWSON, OF MIDDLETOWN, OHO.

WATER-TUBE BOILER'.

Application 1ed..August 4', 1922.

l 1o all w 7mm t may concern Be it known that I,-.MART1N A.-LAwsoNa .citizen of the United States, residing at hlliddletowin in the c cunty otButler and State ot Ohio, halve invented zcertain new and use- `fullimprovement-s in a later-Tube Boi-1er;

and I dohereby declare the following to be a full, clear, and .eX-act ,description of the invention, such as will enable .others skilled in the art to which it appertains to make and use the same.

This invention relates `to a water tube boiler.

It is generally aimed to pro-vide a more etlicient improved construct-ion particularly `adapted :for automotive use Iand particularly jpeu'er er pounds .of yevaperatieu is obtainable; in. which hard or hotliring is aiorded because o1 the efficient ;irculation; in which the tiring may be accomplished by use of oil or gas as the fuel as the device is self-contained and internally tired; in which radiation is kept to a minimum as the water liacketreduces the temperature and in which less danger is prese-nt of its becoming overheated due to all heating surfaces being surrounded by water; in which air leaks are avoided as the fuel entrance is entirely enclosed whereby practically perfect conibusn tion is assured and one in which the losses in the escaping gas or fuel are not as great as in ordinary automotive boilers because the same on leaving the boiler contacts with the coolest tubes.

Additional objects and advantages will become apparent from a consideration of the description following taken in connection wit-h accompanying drawings illustrating one operative embodiment.

In said drawings Figure 1 is a View illustrating the invention is substantially central. longitudinal see tion;

.siniiilar parts in the different vie-ws. dancing theA invention to practice, a drum is tended through Serial No. 579,644.

Figure 2 is a cross sectional view through the entire boiler' taken on the plane of line Q--2 `of Figure 1 ;4 and Figure ,3 is a cress sectional view through `the ent-ire boiler taken on the plane of line of Figure 1. Like reference characters designate like oir ln reprovided at 10, interiorly screw threaded 'at its ends as at 11 engaged by screw threads of end hea-ds 12. A water inlet for the drum v is provided at 13 and an outlet or drain at 13a. An inner drumy 14 is disposed within the drum 10 and spaced therefrom at its -cnd and periphery to form a. water space 15.

izerizontally disposed water tubes 16 are `provided within the drum 14 and are connested to the tube sheets 17 which close the ends of drum 14 and are screwed thereto as at 1S. Thusany ap-prroved method ot connecting the tubes 16 to the sheets 17 may be resorted to but the tubes are preferably passedv through openings in the sheets, ei:-

said openings and welded .to the sheets. Axially ou. the drinn 14. a tube 19 larger than the tubes 16 is` secured to the tube sheet 1T in the same manner as the tubes 16. Disposed through th tube 1-9 is a tie rod 2O which is detachable therefrom and which also passes detachably through the heads 12 and exteriorly of the same is screw threaded and receives nuts as at 21 thereon.

Snugly screw threaded in openings 22 and 23 in the drums 10 and 14, respectively, are screws 24. These screws serve to assist the tie rod in positioning and fastening the drum 14 in place and are capable of separate adjustment to eiiiciently hold the drum 14 in place.

The interior of the drum 14 forms the heating chamber and the water is adapted to circulate in the pipes 16 as will be under stood. The gas or fuel inlet is provided as at 26 and may consist of a nipple 27 generally of cylindrical form expanded in an appropriate opening of the drums 10 and 14 and welded thereto. The tire opening for the drum 14 is shown at 28 and may consist of a nipple 29 expanded in appropriate openings of the drums 10 and 14 and welded to them. wWithin the drinn 14 a suitable baffle wall 30 is provided which terminates short of the upper extremity of dium 14 as shown and the tubes 16 and 19 extend therethrough.

Disposed above the drinn 10 in offset re lation is a live steam cylinder 31. This cylinder may consist of a drum 32 and rest on blocks 33 interposed between the same and the top of drum 10. A clamp band 34 is adapted to surround the drum 10 adjacent each end and have its terminals 35 overlap the ends of the block 33. Clamp bands 36, smaller than band 3st surround the drum 32 and have their' terminals 3T overlapping the terminals 35 and in the blocks 33. Detachable bolts 38 may be passed through the blocks 33 and terminals and 37 to form an efficient support and mounting for the drum At its ends, drum 32 is interiorly' screw threaded as at 39 for engagement by the screw threads o't end heads or closures 40. A detachable tie rod l1 extends axially of the drum 42 and removably through heads d0, beingscrew threaded exteriorly thereof and having securing nuts 4:2 applied thereto. Suitable conduits in the 'form o't elbows 43 extend from drum 10 to the heads 40, preferably being detachably connected to said parts in any suitable manner so as to establish communication between the interior of drum 10, that is the water space and the interior of drum Live steam from drum 32 may be led therefrom through an outlet opening or nipple 14.

It will thus be seen that the water supplied to the drum 10 through the inlet 13 circulates in the drum and through the pipes 16, being efficiently heated by the tire in the drum 141-, generating steam which travels from the water space or drum 10 through the conduits 43 into the live steam cylinder or chest 31 and from the same passes to the source of use through the outlet 44.

All parts used are ot course ot suitable metal, the heads 12 and l0 preferably being of sheet steel, the two sheets 17 being of sheet steel and the drums 10, 14 and 31 being ot cold drawn seamless steel tubing.

As merely one example of the practice ol: the invention has been given, it is to be understood that changes may be resorted to within the spirit and scope.

l claim as my invention A boiler having a water drum, end heads detachably secured to said water drum, a heater drum within said water drum, a tie rod carried by the heater drum and having its terminals extending through openings in said end heads, detachable lastenings on said terminals exteriorly ot the drums and engaging said end heads to supplement the fastening et' the end heads to the first drum, nipples connected to the drums and engaging opposite ends thereof to constitute inlet and exhaust openings respectively for tht` products ot' comlnistion,y a live steam cylinder offset trom the water drum, removable end heads for the live steam cylinder having threaded connection to the live steam cylinder`l a tie rod extending longitudinally oi the live steam cylinder and through its end head, astenings on the terminals of the latter tie rod engaging the latter end heads, connections extending from the latter end heads to the water drum, blocks resting on the water drum inwardly of said connections, the live steam cylinder resting on said blocks, clamps surrounding the water drum, clamps surrounding the live steam cylinder, said clamps having their terminals in over lapping relation and disposed at the sides of the blocks, and :tastenings passing through the terminals of the clamps and said block to secure the clamps and the bloelis in place.

In testimony whereotA I a'liix my signature.

MARTIN A. LAWSON. 

